Air-purifier.



PATENTED MAR. 27, 1906.

H. PLATZ.

AIR PURIFIER.

APPLICATION FILED 00T.18,190 5.

2 SHEETS-SHEET 1.

Mfii'ne Hz a lm emiww PATENTED MAR. 27, 1906.

H. PLATZ. AIR PURIFIER. APPLIOAIION FILED OUT. 18,1905.

2 SHEETSSHEET 2.

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UNITED STATES PATENT oFFIoE.

HEINRICH PLATZ, OF MUNICH, GERMANY, ASSIGNOR TO THE FIRM OF FRANZ SCHORG, (INHABER L. SOHORG & K. LOHNER,) OF MUNICH,

GERMANY.

AlR-PURIFEER= Specification of Letters Patent.

Patented March 27, 1906.

Application filed October 18, 1905. Serial No. 283,322.

To 117/ whom it may concern:

Be it known that I, HEINRICH PLATZ, engineer, a citizen of Germany, residing at Munich, Bavaria, Germany, have invented certain new and useful Improvements in Air- Puriiiers; and I do hereby declare the following to bee l'ull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same.

The present invention relates to that class of air purifiers or disinfectors in which the air is freed of the dust suspended therein by centrifugal power in that ,it is forced through spiral or curved channels; and the invention its direction of movement, and at this point 0 unct-ure an atomizer for water or any suitable disinfecting fluid is provided, so that at the point of greatest centrifugal force the air will meet'a layer of finely-divided liquid with which it will be intimately mixed and freed from any dust which may not have already been deposited on the walls of the housing.

In order to render the present invention easily intelligible, reference is had to the accompanying drawings, in which the invention is represented, in-

Figure 1, in a longitudinal vertical section. Fig. 2 shows a longitudinal vertical section of a modification.

The device, Fig. 1, consists of two funnelshaped convolute channels I), interwound and having their smaller ends curled toward and opening into each other at their point of juncture, as at 0:, thus forming an obvolute. The enlarged end a of the lower funnel is the airinlet and the enlarged end of the upper funnel the outlet, as represented by the arrows. At the lowest oint in the lower"fiinnel an outlet d for the iiquid is rovided, as also at f at the lowest point 0 the up er funnel.

Close to the point of iuncture of t e two fun-.

nels and at the smal est cross-section ofthe channel thus formed an atomizer c is provided, to which water or other liquid may be fed b any suitable means which sprays the li uid against the walls of the channel. The w ole housing may be strengthened by suitable stays, as at g g.

Means may also be employed for heating or cooling the air, which may also be force through the apparatus by any suitable apparatus.

On entering the apparatus the heavier articles of dust suspended in the air wil be thrown against the walls by the centrifugal force, whence they will be washed off by the liquid streaming down the walls. Owing to the fact that the atomizer is situated at the smallest cross-section of the housing, the air will pass through the layer of finely-divided liquid at the moment of its greatest speed, and thus the contact will be most energetic and intimate, whereupon the air slows down again toward the outlet of the apparatus. The whirl caused by the partial reversal of the direction of motion of the air in the obvolute channel will also have the effect of separating out particles of dust and other impurities.

In Fig. 2 is represented a section of a modification of the air-purifier in which the atomizer may be omitted. The washing of the air is effected by a quantity of water containedjin the lowest part of the lower channel I) close after the air entrance and narrowing the section of this channel at this point only immaterially. A certain quantity of this water is carried along by the air sucked in by the ventilator or fan vand atomized by the walls of the channel, thus washin and cleaning the air. The lower channel b bein thus formed as a water-container is provide with a tap k for letting out from time to time the dirt water. Ifit is desired to cool the air to be c eaned or washed when streaming through this ap aratus, ice may be put into he lower ohannei b. The melted ice may be let out through the tap k or drain-pipe I claim as my invention 1. An air-purifier consistin of a housing having formed therein channe s in the sha e of super osed funnels having their smal or ends cur ed toward each other and opening. into each other one funnel serving as an inlet and the other as an outlet;

'2 An air-purifier consistin of a housing having formed therein channe s in the shape of superposed curled funnels having their smaller ends engaging withand openin into each other and means fors raying a uid over thewall of-one of saidcliannels one npel serving as an inlet and the other-as an out- 3. An air-purifier consisting of a housing having formed therein channels having the 4. An air-purifier consisting ot a housinghaving formed therein channels being arranged in the form of superposed funnels having their smaller ends engaging with and opening into each other, the one funnel serving as an inlet and the other as an outlet and of a container being arranged in the lower funnel for taking up water or ice.

5. An air-purifier consisting of a housing having formed therein an obvolute channel with successively converging and diverging walls, -and means for impregnating the air wlth moisture during its passage thereconnecting at their smaller inturned ends, a I splray device arranged in the channels near e point of junctionand operating in a direction op osed to the 60w of the air through the channe s, and a drain leading from said channel.

In testimony whereof I, hereunto aflix my signature in the presence of two witnesses.

HEINRICH PLATZ.

Witnesses:

ULYSSES J. BYWATERL MATHILDE K. HELD. 

